Padlock



July 14,1925. 1,546,021

W. G. PARMELE PADLOCK Filed April 21. 1923 2 Sheets-Sheet l immmm July 14, 1925. 1,546,021

wfG. PARMELE PADLOCK Filed Apfii 21. 1923 2 Sheets-Sheet 2 Patented July 14, 1925 UNITED STATES WILLIAM GORDON PARMELE, OF SEATTLE, WASHINGTON.

, 'SPAYDLAOCK.

Application filed April 21, 1923. Serial No. 633,811.

To all whom it may concern:

Be it known that I, WILLIAM G. PARMELE, a citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented a new and useful Padlock, of which the following is a specification.

p This invention relates to a padlock, the principal object being to provide a padlock which will completely house and conceal the projecting portion of the staple o'r keeper so as to prevent unauthorized access thereto. 3

Another object is to provide a padlock the housing of which is so shaped as to prevent the same from being turned readily, as when an attempt might be made to twist the staple or keeper out of position. 7

Another object is to provide a padlock simple, durable and compact in construction, formed of few parts and being easy to y- W1th the foregoing and other ob ects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts which will be hereinafter more fully described and pointed out in the claims, it being understood that various changes may be made in the construction and arrangement of the parts without departing from the spirit of the invention as claimed. v

In the accompanying drawings the preferred form of the invention has beenshown'.

In said drawings: Figure 1 is a perspective View showing 7 the padlock applied.

Figure 2 1s an inverted perspective View of the padlock.

Figure 3 is a longitudinal section through the padlock in engagement with a staple.

Figure 4 is a section on line 1- 1 Figure 3. Figure 5 is a section on line 55 Figure 3. Figure 6 is a section on line 6-6 Figure 3. Referring to the figures by characters of reference 1 designates the housing of the padlock, the same being formed preferably in one piece substantially semlelllpsoidal 1n contour. Formed in the base of this housing is a diametrical groove 2 extending partly across the same and closed at its ends.

' A passage 3 extends inwardly from one end of this groove and communicates with a compartment 4:. One wall of this compartment may be grooved longitudinally as shown at 5 while the opposite wallispreferably formed fwith anoblique portion 6 terminating in a shoulder 7 located at the inner end of the passage? An opening 8 extends into the housing 1 from the small or apex portion thereof and 'opens'into the compartment 4. In this opening is secured a tumbler mechanism indicated generally at 9 designed to cooperate with a key 10 inserted into the lock. Obviously unless the key is of the proper size and contour it cannot be inserted into the lock androtated'. A bolt 11 is normally seated within groove 2 'so as to completely fill the same and lie flush with the base of the housing Extending from one end of this bolt is an arm 12 and this'arm project's'through passage '3 into compartment 4 and normally bears against the end wall of the com-partment. A longitudinal rib 13 is formed on the arm and is adapted to slide in groove 5, thus to limit the movement of the arm.

Mounted in the compartment 4 is a block 14 constituting a tumbler and one corner portion of thi block is cut away diagonally as shown at 1 so as to ride on'the wall'6 of the compartment. V-shaped teeth 16 project from the tumbler 14 and corresponding recesses 17 are formed in the arm '12. A spring'18 bears against tumbler 14 and also against the housing and serves to press the tumbler so that it will wedge between wall 6 and arm 12. Teeth 16 will also was wedges and when pressed laterally into recesses17 will tend to draw the bolt 11 back into recess or groove 2.

One end of the tumbler 14 has a recess 19 partly closed to provide a key receiving slot 20. Key 10 has a lug 21 projecting laterally from its free end and this lug is adapted to be inserted through slot 20. By

then turning the key the lug can be interlocked with the tumbler 14, as shown in Figure 3. t

In the drawings a hasp has been shown at H and a staple or keeper has been indicated at S. Groove 2 has lateral extensions 22 as shown in Figure 2 and these extensions cooperate to provide a recess sufiiciently large to receive the staple S. Assuming that the bolt 11 is supported outside of the groove 2 as shown in Figure 2, it can be inserted into the staple S. By then pushing housing 1 toward the staple the bolt 11 will be thrust into groove 2 and the recessed edge of arm 12 will slip past teeth 16. Thus the relative movementof the housing, arm 12 and bolt 11 Will be along lines extending axially of the housing. During this operation tumbler 14 Will be thrust toward" opening 8, thereby compressing spring 18. As soon as the staple has been properly seated in the housing the lock can be released, S ring 18 Will thrust tumbler 14 against Wal 6 and this wvall. will deflect the tumbler so as to cause its'teeth 16 to Wedge into recesses 17 Consequently bolt 11 Will be held securely in groove 2 and any attempt to pull the housing off of the staple would merely result in I more tightly wedging tumbler 14 in posiwould therefore be tion. Because of the peculiar shape of the housing it cannot be gripped readily and it iliicult to force it on of the staple. To remove the lock a key of proper size and shape is inserted into the lock and into slot '20 and then rotated. The key Willthus hook into tumbler 14 and by pulling the key outwardly it Will draw the tumbler With it, thereby releasing arm 12 and allowing the housing 1 to be pulled outwardly a sufficient distance to permit the bolt 11 to be withdrawn from the staple.

lVhat isclaimed is: l 1. A padlock including a housing having arecessed staple receiving base, a staple engaging bolt normally seated in the recess, an zarm extending from the bolt, said arm and bolt being shiftable axially of the housing in one direction-to draw the housing onto the staple and in the opposite direction to release the staple from the housing, a tumbler having wedging engagement with the housing and arm for holding the bolt in normal position, said member being mov able axially of the housing, yielding means Elor holding the tumbler in Wedging position, and means for engaging the tumbler to release the arm.

ing, a Wedging'tumbler movably mounted the housing, a laterally extending tooth thereon for Wedging engagement with the recess in the arm, yielding means in the housing for holding the tumbler normally in Wedgin-g position, thereby to maintain the housing substantially fixed relative to the engaged staple and means on the tumbler for engagement by a releasing key.

4, A padlock including a rounded housing having a flat recessed staple re'cei'ving base, a bolt normally seated in the recess,a'n arm extending from the bolt into the housing and movable axially of the housing, spring pressed Wedgin-g means in the housing for holding the bolt against Withdrawal and for exerting a constant inward pull upon the bolt, to "maintain the housing substantially fixed relative to an engaged staple and means carried by said 'ivedgi'ng means for engagement by a releasing key. The combination with a staple and a member to be securedthereto, ofa housing having a flat'staple receiving; base adapted to be supported outside the housingfor insertion into a staple, said housing being shiftabIe relative to the bolt and house the bolt andithe engaged portion of the staple, and cooperating Wedging means on the bolt and in the housing for holding thebolt against Withdrawal from the housing and for binding the housing againstYsaid'mem ber.

In testimony that I claim the foregoing as my oWn, I have hereto a'i'lixed my signature in the presence of two Witnesses.

WILLIAM GORDON PARMEL'E. 

